Propagation factors of multi-sinc Schell-model beams in non-Kolmogorov turbulence

被引：22

作者：

Song, Zhenzhen ^{[1
]}

Liu, Zhengjun ^{[2
]}

Zhou, Keya ^{[1
]}

Sun, Qiongge ^{[3
]}

Liu, Shutian ^{[1
]}

机构：

[1] Harbin Inst Technol, Dept Phys, Harbin 150001, Peoples R China

[2] Harbin Inst Technol, Dept Automat Test & Control, Harbin 150001, Peoples R China

[3] Beijing Inst Space Mech & Elect, Beijing 100094, Peoples R China

来源：

OPTICS EXPRESS | 2016年 / 24卷 / 02期

基金：

中国国家自然科学基金;

关键词：

PARTIALLY COHERENT BEAMS; DARK HOLLOW BEAMS; FREE-SPACE; GAUSSIAN-BEAM; MOMENTS;

D O I：

10.1364/OE.24.001804

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We derive several analytical expressions for the root-meansquare (rms) angular width and the M-2-factor of the multi-sinc Schell-model (MSSM) beams propagating in non-Kolmogorov turbulence with the extended Huygens-Fresnel principle and the second-order moments of the Wigner distribution function. Numerical results show that a MSSM beam with dark-hollow far fields in free space has advantage over the one with flat-topped or multi-rings far fields for reducing the turbulence-induced degradation, which will become more obvious with larger dark-hollow size. Beam quality of MSSM beams can be further improved with longer wavelength and larger beam width, or under the condition of weaker turbulence. We also demonstrate that the non-Kolmogorov turbulence has significantly less effect on the MSSM beams than the Gaussian Schell-model beam. (C) 2016 Optical Society of America

引用

页码：1804 / 1813

页数：10

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